Attachment for crocheting machines



May 2, 1950 M. PHILIP l 2,506,432

ATTACHMENT FOR CROCHETING MACHINES Filed Oct. 10, 1947 '7 Shets-Sheet l /3 i 38 0 /2 i S Q 35 A ll l- E L f 'l I I 49 30 o I QUI. 59\ 11% :lla

L Afro/mvg YS May 2, 1950 M. PHILIP ATTACHMENT FOR CROCHETING MACHINES 7 Sheets-Sheet 2 Filed oct. 1o, 1947 EEUU www May 2, 1950 M, PHlLlP 2,506,432

ATTACHMENT FOR CROCHETING MACHINES Filed Oct. l0, 1947 '7 Shee1',s-Sheet 3 May 2, 195o M. PHMP 2,506,432

ATTACHMENT FOR CROCHETING MACHINES Filed Oct. l0, 1947 7 Sheets-Sheet 4 Mayz,1'95o .M PHILIP 2,506,432

ATTACHMENT FOR CROCHETING MACHINES Filed Oct. l0, 1947 7 Sheets-Sheet 5l www May 2, 1950 i M, |=H|| |P 2,506,432

' ATTACHMENT FOR cRocHETING MACHINES Filed oct. 10, 1947 7 sheets-sheet e Fra- ECI May 2, 1 950 M. PHILIP 2,505,432

ATTACHMENT FOR CROCHETING MACHINES Filed oct. 1o, 1947 7 sheets-sheet 7 IN V EN TOR. www 91? my BY i M WWU/W ATTORNEYS Patented May 2, 1950 ATTACHMENT FOR CROCHETING MACHINES Morris Philip, New York, N. Y. Application October 10, 1947, Serial No. 779,051

7 Claims.

This invention relates to the art of machinecrocheting, and, in particular, to attachments for crocheting machines of the type exemplified by the disclosure in U. S. Patent No. 1,125,437, issued January 19, 1915, to Avis. n

An object of the invention is to provide a novel and simple attachment for such a machine whereby the needle may be prevented from reciprocating while other parts of the machine are operating their respective normal manners for the purpose of causing the machine to form chain stitches without also alternately forming regular stitches through, for instance, the selvage of a piece of fabric to which the crochet work is to be applied. Where, for example, the machine is used for crocheting an ornamental border or binding on the selvage of a piece of fabric, my attachment operates to cause the machine to produce chained crochet work that is but intermittently anchored to the selvage and at intervals greater than those corresponding to the normal periodicity of reciprocation of the needle.

A further object is to provide a novel thread holder.

Generally, the invention seeks to provide a machines of the type mentioned may be caused 4*to operate to form linked chain stitches independently of stitches anchoring the crochet work to the fabric, or chain stitches each anchored to the fabric, or any of a variety of combinations of anchored and unanchored chain stitches,` as desired. With the attachment or my invention such a machine may be used to execute a, crocheted border upon the selvage, for instance', of a piece of knitted fabric, such as that forming a sweater, the border comprising a series of chain stitches each linked to the selvage, in the usual manner, 'said series being interrupted at predetermined intervals by a hiatus of links or stitches engaging the fabric selvage, for the purpose of producing button holes or other openings between the crochet work and the selvage.

In the drawings:

Fig. 1 is an elevational view of a crocheting machine of the type mentioned, having thereon one modification of the attachment of the present invention. The operator normally sees the machine from the angle of View of the figure, and, for convenience, this side is referred to as the operators side. The upper portion of the well-known needle-bar is omitted to condense the drawing.

Fig. 2 is an elevational view of the lower part of the machine seen at 99 to the operators side, and to the operators left. A covering (offthe common feed-mechanism housing) is removed in this gure to expose certain internal parts. Certain upper parts of the machine are omitted in this gure as they are immaterial to the illustrative purposes of the figure.

Fig. 3 is an elevational view of the machine from the operators side, showing parts of the machine cut away and in section and certain normally obscured internal parts.

Fig. 4 is an enlarged detail of the cast-olf horn mechanism positioned outside the machine housing; the same is less clearly seen in Fig. 2.

Fig. 5 is the section 5--5 of Fig. 4.

Fig. 6 is a schematic rectilinear perspective View, with certain parts omitted, showing one modification of my attachment and certain usual parts of such a crocheting machine that specially cooperate with my attachment. Much of the usual crocheting machine is not shown inthe drawing for the purpose of clarity in illustrating the relationship between the actual crocheting elements of the machine and my attachment.

Fig. 7 is an interior elevational View of the common crochet-hook carrier, showing, also. beyond the carrier, its guide plate. Fig. 8 is a partly sectional elevational detail of the means provided in my attachment for en'.- gaging and disengaging the needle-bar clamp of the usual machine of this type.

Fig. 8A is a schematic illustration, greatly en'- larged and purposefully exaggerated, of a short section of thread pattern possible to be duplicated upon the usual crocheting machine when fitted with my attachment. The pattern illustrated is merely exemplary: the anchored and unanchored chain stitches may be distributed in a variety of combinations other than that illustrated.

Figs. 9 to 26, inclusive, illustrate in perspective, and somewhat schematically, various stages of operation of the actual crocheting elements of the machine when controlled by the attachment of my invention. The figures are more particu.- larly described in the text, below. In these gures the illustrations are limited to the needle, the thread holder, the crochet-hook, the cast-off horn, the chaining finger and the thread, and all operative parts are shown partly erased. The fabric the edge of which is to be crocheted is not shown because illustration of the fabric would have obscured the figures; the line of penetrations of the fabric selvage by the needle will o f course be understood to be approximately along the edge of the chaining finger that is to the left in the figures.

Figs. 2'7, 28, 29, and 30 illustrate a modication of my attachment.

Fig. 27 is a fragmentary elevational View of a crocheting machine of the type mentioned, seen from the operators side, and showing only part of the machine tothe operators right, and the modification ofthe attachment.

Fig. 28V is'fthe section 28-28 of`Fig. '27, and principally illustrates a cam and its driving arrangement.

Fig. 29 is a view, from the angleiof viewff Fig. 28, of a disk, or base plate, upon which elements are mounted to form such a cama-asy is,...

seen in Fig. 28.

Fig. 30 is a perspective viewiofanelementemployed in building up such a cam.

As the present invention relates to an' attachment,.and modifications 'thereof, for a crocheting machine of the type exemplified/by the disclosure inthe citedL patent, and so'v thata full `understanding of the function and utilityl of the attachmentv may be had, I have shown, in Fig. 1*, an elevational viewof such a crocheting machine with one modification of' my attachment applied thereto. Fig. 1 shows the. crocheting machine -as it ,would normally be seen bythe operator.

The patent`- 'cited 'employs certain terminology 'that hasY become common among those skilledin therelated art, and for this reason I follow herein substantially the usageV of Avis in referring to parts of the machine.

In Fig. 1' the needleV is designated as' ||;:V`.the needle clamp 12;' the needle bar i3; and the yneedle-bar ,clamp I4.' In an'unmodifled machine of the type shown the needle-bar 'clamp is linked to a lever'lE, pivoted tothe body of the machine atl; and engaged "at-one end by a pitman" I'I connecting'with 'an"ecc`entric "i8 mounted on'l a drivershaftlil adjacent to a" pulleyZ by means bf which power may be applied to the machine,

' and normally cause the needle bar to reciprocate ,verticallyas a function of the revolution'of the drive shaft.

"Howeven in applying to such a machine" the .modication of my attachment partly' illustrated `in^Figs. 1 and' 2, and more fullyillustrated in Fig. GII remove the usuallli'nk between the vneedlev'bar clamp andthe leveryand vsubstitute for 'such link a special latch 23v (see, also, Fig.' 8) ,which is `more particularlydescribed below The usual link :is .not'shown' in thedrawingsjV however, the "loci fof; pivotal attachment Vof such link' to 'theneedle- ',bar clamp .andv lever, respectivelyare of jimr "portance inthestructure and application*V ofmy jattachmenh and these loci have been" designated '2 I" (where the link is `customarily attached to vthe needle-bar clamp) and/'22 l(where 'thelinlis'cusftomairilyattached tothe lever) Fig.' 3, an elevationfrom the angle ofviewof #Figi 1,1shows the-machine-fpartly broken away f, and-partly in section to illustrate certain internal uparts.

- 'iMountedon the drive shaftl 9 andupon ashaft 152A, respectively, aretwo cams, 25;and.2, geared v:togetherr and. controlling, the operationlofA a .carzrier 2'l,of the crochet-,hookl 28 in vthe. usual manmer. YTo the left of cam 25, in Fig.V 3, the drive .:shaft:l9is seen to pass through apartition wall same mounting means, a specially formed thread holder 35, which is more particularly described l' f-below.

l'I-he usual cast-off horn is designated 36. Fig. 6 fully illustrates the well-known mechanism `whereby the rotary motion of the drive shaft I9 .iis-*translated through shaft 24 to eiect oscillatory. movement of the cast-off horn 36 and the thread holder (see, also, Fig. 4)

ToY this point I have described briefly the common elements of crocheting machines of thetype mentioned above and illustrated inthe drawings; particularly I'havedescribed the salient elements to be" foundin' a crocketing machine such asdescribed in the Avis patent, supra. I have mentioned two replacement elements: (l) my latch 23, which, in one modiiication of my attachment, takes the placev of the usualY link (e. g. link 5i of Avis) connecting the needle-bar clamp andthe (needle-bar) lever (i5 in the presenty drawings) and1(2) my specially formed thread holder`t35, which is substituted forv the usual supplemental thread holder. (iii of Avis).

'I now describe the structure and function of one modification of my attachment. Howeverfas a preamble to a description'of aspecic structure, I point out, immediately following, certain normal operations of a crocheting machine of the type mentioned which, by means of my attachment,it is intended to vary.

.In a crochetlng machine such as that ofAvis the needle bar moves downward and upward during each revolution of the drive shaft; andjof course, if fabric is being fed through the machine, and the needle is supplied with thread,

the needle penetrates the fabric one time for each .patternmade along the, edge or selvage of the fabric'during a single revolution of the drive shaft isnecessarily linked to the` fabric. .Obviously .a great varietyof patterns may be had with the unmodified Avis machinathe kdifferences ,being .functions of the rate of feed; for example, if'the feedr is such. that the fabric does ynotmove. for- ,ward vfor each revolution oftheshat, butonly after a number of revolutions,y alike number'of ,penetrations bythe needle will take place and a so-.called hunched pattern will result. Butori the unmodified machine, it is notpossible to,.make a chain withoutalso lanchoring the 4chain `tojthe fabric if the latter is presentin .the machine.

The attachment of my invention has the.es-

.pecial purpose of providing means wherebyeach crocheted pattern made per, revolution of f the drive` shaft need not be linked or anchored to the edge or selvage of the fabric; and to accomplish .thisV result .my attachment has as ,oneI of .its principalfunctions the prevention of downward movement of the needle bar (and, of course, the needle itself) during certain selected andY predetermined revolutions of the drive Yshaft when other elements are operating in their respective normal manners, so that a strand of thread is not carried through the edge or selvage of the fabric during any such revolutions.

The operation of a machine of the type of Avis is well known, but a brief restatement of certain elementary functions will be of aid in understanding the reasons for functions of my attachment. In the Avis machine, for example, if it be assumed that the needle, supplied with thread, has penetrated the edge of the fabric, the advanced crochet-hook, being then beneath the chaining finger and fabric, and being then retracted, catches a lead of the needle thread and draws the lead, in the form of a loop laterally beneath the chaining finger; then, as the needle is Withdrawn from the fabric upwardly, and the crochet-hook retracted beyond the chaining finger and oscillated upwardly, the crochet-hook is again advanced over both the chaining finger and the fabric, carrying the loop of needle thread around the chaining nger, and the crochethook, on being retracted from this second advance, catches another lead of the needle thread between the uplifted needle and the fabric and draws this second lead, also in the form of a loop, laterally above the chaining finger; and this basic operation is continuously repeated, the rst loop subsequently slipping through the second loop, and so on, forming what are known as chains.

This operation makes a thread pattern having a lead of the thread passing twice through one hole in the fabric, the other ends of the lead being knotted against the outer edge of the fabric; and, Iin terms customarily employed in the art, a regular chain stitch is the result. Obviously the entire unit pattern is linked to the fabric. The thread leads pass beneath and above the chaining finger and are knotted on the edge of the finger away from the edge of the fabric.

- It will be obvious that if the needle is prevented from descending through the fabric during a revolution of the drive shaft immediately following a series of normal operations of the machine, the crochet-hook will have completed a last stitch in theinormal manner, but that upon the advance of the crochet-hook next beneath the chaining finger and the fabric no new lead of thread will be present for the crochet-hook to catch; and after the crochet-hook is retracted, turned upwardly, and again advanced inthe usual manner, this time over the chaining linger and fabric, the needle thread (i. e., that strand leading directly to the eye of the needle from the pattern upon the crochet-hook itself) will be out of position to be caught by the crochet-hook on its immediately following retraction. Plainly the thread lead will not be a normally taut vertical lead, but will simply be a loosely swinging strand assuming various amorphous positions due to the continued movements of the crochet-hook and the static condition of the needle eye. Thus, if the needle-bar (and needle) remained statically Withdrawn from the fabric and the other elements of the machine continued to operate in their respective normal manners the feed would eventually effect the drawing ofi of all thread from the crochet-hook and the chaining finger and the carrying off of the thread along with the advancing fabric, only a single unknotted and unlooped strand of needle thread connecting the last-formed thread pattern of crochet Work with the needle eye and the usual storage spool.

But if means are provided whereby during the revolution or revolutions when the needle is inoperative the lead from the needles eye is always maintained in proper position and taut so that the crochet-hook upon retraction followingits advances above the chaining finger and the fabric can catch the lead, it may be demonstrated that a series of chain stitches may be made none of which, except, of course, the first, and, if desired, the last, need be anchored to the fabric, but which will form on the edge of the chaining nger away from the edge of the fabric.

In one modification of my attachment I prolvide, as part of the means for selectively preventing operation of the needle-bar during-one or more revolutions of the drive shaft I9, a latch 23 as a substitute for the link normally employed in machines of the Avis type to connect the needlebar clamp with the needle-bar lever. The latch 23 (see Figs. 1, 3, 6, and 8) is substantially a bell'- crank having a dog 31 formed at the heel thereof. One arm of the bellcrank is pivotally mounted upon the end of the lever I5 at 22, one of. the loci of pivotal connection of the discardedlink abovementioned. When the lever I5 is positioned as shown in Figs. 1, 3, and 6, the dog 31 engages a pin equivalent to the link pin originally provided at 2| within a channel in the needlebar clamp.

To the other end of the bellcrank is attached rod 38 which connects the bellcrank with the outer end of a radial arm 39 which is fixedby `a set screw 40 on a shaft 4| journaled in a bore 42 of the partition wall 29 and in another bore 43 of an upright member 44 fixed to the base of the housing of the feed mechanism of the machine. This connection, which ispivotal at each end, yis best illustrated in Fig. 6.

In Fig. l all parts of the connection outside the housing of the feed mechanism may be seen; in Fig. 2 at the end of the shaft 4| and the upright member 44 may be seen. Those parts of the connection not shown in Fig. 1 are seen fromthe same angle of view in Fig. 3.

On the end of the shaft 4|, beyond the upright member 44, is fixed a radial pin 45 (cf. Fig. 6). Upon the outer face of the .gearj3l' of the feed mechanism (usually eight to one inratio to the driving gear 30) I affix a disk 46 concen-, tric with gear 3|. This disk 46 is provided, ar.- bitrarily, with eight holes, preferably threaded, and angularly spaced and at equal radial distance from the center of the disk. Two of such holes are designated as 41, 41.

Into these holes, 41, 41, or any of them, VI insert pins 48, preferably threaded, in such -arrangement as desired. As the gear 30 iseupon the drive shaft I9 its revolutions are synchronous with the revolutions of the latter; assuming the ratio of gear 3| to gear 30 to be, as is often the case in the art, eight to one, gear 3| will revolve once for each eight revolutions of shaft I9, or, for each revolution thereof, one of the eight holes 41 will be brought into a given position with respect to the radial pin 45; and, if a pin 48 is pres'- ent in a hole 41 so brought into position, the pin 48 will engage the pin 45, and effect a slight rotary movement in shaft 4| which operates to revolve the radial arm 39 slightly and to depress by means of the rod 3B the latch on the center 22, thereby7 withdrawing the dog 31 from the pin fat 2|, and effectively disengaging the lever I5 from the needle-bar clamp I4,

The arrow in Fig. 2 and that in Fig. 6 indicate the direction of rotation of the gear 3| and disk 46. Obviously the vcontact of the pns-48 and amarrar .arranged-normally f to presen/ef, the. relationship .nartSaseemn-.Fgs- 112;-and6roperates B01-Drewient 'rthegneedleebar :fromrdescendineduring any .,'revnlutioneofn the'fdrivecshaft 119:; corresponding eine. therein.

.:sItifiwillfbe obvious f thatgsuitable means *.for preventing thezneedlefbar from. dropping.: merely gravityrfsuchas afspring (notshown) gis pro- Xiddnthefban cannot; operate during. a `revolutilon auf. the.,x driveshaft Athat effects release v.of latch 23, ai,'.`et:.:1uring.; :such` revolution .other partswhose .moyementsi are: functions: ofl such reyolutionwill `operatie.in.therfnsual manners. l While the spring .alfseryes to effect .-reengagement between the dog Neanthe; pinI at. 2 1 after; the lapse-oh contact .,betweena pinr48 and pin 45; if .the next lreVLOlllton .-'bfheldrive shaft-brings another pinv 48 into cQn- -:tactewithzpin 45 ithe. need1e;.bar iisagain; pre- 'larented rimm.. descending. It; :will be obvious that byarrangingthe pins iinftheholes-@lof the fdisk' 146 1.a.- ;considerable. variety;V of; patterns of; .0p-

Theflsupplementalthreadholder. fof Avis, :for example, is oscillated back and forthecross the epath ofthezneedlecbywellfknown means. Lsub- @stitutexfonhis supplemental thread holdervv a speflowers: ende-anzi eye,` one ewall of :which is interupted ati-.the .-sideo :the thread holder, as `seen -;infEigsi.'9 .etfseqg so that theV eye comprisesfsubrstantiallywtwo; opposite1y..positioned hooks. The lzffunction :willfbe readily understood from;v `the following: When the needlelthreadis drawnmp- .ward=by..;the needle after a lpenetration* -byzthe '.nee'dle offthe fabric,- ,a loop. ofthethreadwll have aovenfthechaining nger and fabric LBut; once Suche a.com'pl'ete: cycle of; operation has; taken place-Li.v e.,'-.af.ter^fthe croehetfhookhasfgonce Vcaught afloop ofthreadv above. the fabricif the ineedlefbar is prevented from' descending during the next revolution of the drive sharmon neither -helf `retraction1 ofu'the.- orocheteiiooirf ater itsv ad- -ffvancibene'aththechaining nger. and f abricnor -iitsrreaction after-nits advance .above -the chaining -fngerfand therfabric willrthe' crochet-hookY catch -newfleadr of. thread, for l no .such new lead i will .aber present `inaT proper position. Thathread `f'holder 35fthat' Ixsubstitute :fon the usual thread :holden-as it swings .toward the operator Voverfthe path .ofithe needlepcatches the; strandof thread directly connecting; the eye of the needle with the Nlastelfzolepierced in the fabric, and retains. .this .estrandV withinthe interrupted` eye of `the thread ,iholder'until a'subsequent-descent ofthe needle- .ebarwtakes-fplace. Thus, after ftheA crochet-hook lwatches thefthread as it `retracts after aflast noramaladvance above the chaining nger and fabric,

.. proceeds throughthat part of itscyclic. Inove- @iment'beneathfthefcha'iningfnnger and fabric, and returns again above thenger andfabric, ,the `:i513.liet-iris:s tilll'leld in properposition by the thread rebelde metwithstandingthefiact-thatthe-needles-hsenot. egainzreciprecated.

dqpeeesgiheineedlefbe scendingstheleadioft Qmthgere of the needle remaLisMithnheYQ Qh'llllwed orQchet-hooksafterfa oveihe chainingffingecand bric.:arlnofcthreedme lie-caught.sezthataseriesfo bains. mayfbefmede hone.of:.whicmgexcentingthe;termiealxstitcbes, areeQnnectedftQsrthe -selyageof .ithe .fabrighlm instead, fer-meen: theledee. of .the chaninggnneer awayirom.. such-sewage. aUponizthegnextedescent..of the needle, beweren the thread eamithdrawnirfrom .,thegeyeio `:the thread: holder ...3 5 and.; does; not: reenter .euch-eye untilfthe.I needle.: .is .-withdrawnraeainiziromathe .fabric- Igshow, inf-Figa' 911:0 26:1.inclusveifereatlrrenvlareedzdjailsillustrativeyof rarieusrstaees o .oeerationloff.thecrocbeting.machine,withmxi'at- .tachmenti appliedgthereto.

.kiln Fig. 9;parts.ofthe;needle.thethreadiholder. 4the .crochet-.hoohngthe:.castfoff .horn "training finger., and;threadfarefseen. :ein this; guregghe .needlerisassumedtohaveaiustfempletedanene- .trationl .Orland withdrawal#fromiithegfabrc :vob- .yioi1s1y.p then,,f.the :crochet-hook fhaye;;.e e m -pleted one cycle ofgrnoyernentgbeneat the. cha-iningineen.havescanghtthe:needleet `.eadsasr.li-1K1@ .needle@wasn-being: withdrawn; ifromf..the z z.fabri.0, and have begun a retraction in its cyciic,;.mQYe ment fabove.thegchainingmnger. ;r.- See;thearrow whchn-:Eia Sindicatesithe direction-.oi moye- -mentaof the. crochetehook 28.41. Noticethata loep Aofz'threadrY withoutfa knotaisfcshowniauponnthe .crochetfhooh v.1.;Inflg:9::.the retracti.nggcrxaclietd vhoiok isabQuttO-engaea thfthreadeabove ,the chaining. nnger; noticecalso.thatzsthe -threadziblivlleenthe ,fchaining-,inger (i. V e.;1 the..-a bric and thef eye of;thef.;need1e has enteredbthe ieyefof fthe thread.holder,l 3,5. The threadholderfhas vbegun tosmove awayromz thefoperatorlas. indicated, by the arrowein fFig.. 9. f' This sgureparticularlyillustrates `the :function of the; th re ad holdenf. As it;.-os cillates. back and;: forthzalthoug he need-lewitself mightfnotemove; the threads.4 .f fpeaiedlye brought into .'vpostion; .;tol beg-engaged Aabove-the 'chaining-t1 ringer z andl fabric? byf'vg' the crochet-,hook Qn': its f return .moyementfaftengan advance oyerithe `Iinger..

In Fig; .10,1 asconti-nu-ation.goetheffoperation shown. fThe-east.of1fhorn= 36 isz being-@retracted by. vthe Vmechanisml f (not.- shown here) -,whicb. vvoper-- ates to -oscillate..-sit:and,.therthreadeholdere at. a :predetermined periodicity, such-smechanismg-of course; being part Iloff-the.. usualmachinesfoffgzthe 4typ e; described. The cro cnet-hook-v hass Vpulled-etna needleuthread intoxthe.:iorwardgside offs-themen 'of the: helder,-l 3 5 `the latch fof.: theA crochetehook .hasbeenfzclose and-the; loopsfoffthreadnnponthe Icrochetehookxare"being@withdrawnitherefrom.

.fFig.- =10Afshows a detail otheknotseen-.on'much fsm-aller scale ini-iglilO.

'f In Fig. '1lv Ythe `operation-is=shownthave progressedvy further. The crochet-hook nasi-been retracted `to its V'extreme position, and -is onfthe V'point ofgniovingsforward againfrornanothercycle, this/ time beneath -the "chaining nger. The 4rhorn 35 has been retracted; from the Work. "Ihe-'two .1Qopsj shQWn on; the crochet-'hopkini'igg 9, Uand alsoseen .slipping thererrom.nil1g,10, are shown getherfrom. the. crochet-hook.. .and ,tube supported by the leadsroi that-loop..offneedlethread caught by thecroehetfhookinria-10.

Fig. 12 illustrates an immediately following stage in the operation. The crochet-hook has movedforward again, this time beneath the chaining linger. Only one loop of thread remains upon the crochet-hook, which hasv engaged no furthery f' still holds the loop of thread which it carried through its last cycle. Here,in Fig; 14, the cast-- off-horn is moving toward the work.-

In Fig. 15, showing; the succeeding stage of operation,'the crochet-hook is -being raised preparatory'forits next cycleof movement4 over the chaining finger;- and the cast-01T horn has passed v over the work.v In-Fig. 16 the crochetg-hook has moved forward over thecast-off horn and over the chaining finger, the horn having forced the single 'loop shown upon the crochet-hookin Figs. 11, 12, 13, 14, and 15, and also-in the present figure (Fig. lc) f posteriorly with respect to the latch of theI crochet-hook.

In Fig. 17A conditionsimmediately succeeding i' those illustrated in Fig. 16- are depicted.' The forward-moving crochet-hook haspassed Vover the chaining 'finger and has substantially'reached the limitof its'forward' movement; the cast-off hornhas forced the singlefloop upon the crochethook back beyond the latch thereof. 1-

In Fig. 18, showing a stage following vthat illustrated in'Fig. 1'7, the crochet-hook is being again retracted. The' loop thereupon, and behind the latch, is being drawn olf the crochet-hook, and is swinging the latchto closed position. The castoif horn has held the loop on the crochet-hook during the forward movement thereof (cf. Fig.

-f 17)-, and still engages the leads of the loop even as the latter tends to close the latch and slip off the crochet-hook as the latter retracts. But this causes the crochet-hook to catch one lead of the same loop (i. e., that lead connecting directly with the eye of the needle) and so to form another loop. In Fig. 19 I show the continuation of retraction of the crochet-hook: the cast-off horn still holds the work, forcing the most `posterior-'loop off the crochet-hook, over the latch; andy as mayclearly be seen, will presently force the loop over the loop held within the actual hook of the crochet-hook, and so force the first loop mentioned, immediately above, off the crochet-hook altogether; #The '-"new loop, i. e.,^that caught; in Fig. 19, within the lactual hook of the crochet-hook and separated from the withdrawing loop bythe' latch,

'which-is closed, will be drawn through the with- A drawing loop to form another chain link.

In Fig. 20 I illustrate a succeeding stage wherein the needle is again operated, and is shown moving downward to penetrate the fabric. The cast-oif horn has been withdrawn and is no longer in4 Fig. 21 shows the needle nearing the end of its..

downward movement; the crochet-hook is passing beneath the chaining nger. Fig. 22 shows an l10 Fig. 23 the` hook (dotted lines) ofthe crochethook is seen catching the thread near the eye of the needle. Of course it will be understood that the eye of the needle, in Fig. 23, is beneath the fabric to which crocheting is being applied.

In Fig. 24 the crochet-hook has been fully retracted and is being turned upward for its next cycle of movement over the chaining finger. It will be seen that the crochet-hook now has two loops upon it, the new loop of Fig. 19 and the new loop of Fig. 23. In Fig. 25 both the crochet-hook and the cast-01T horn are advancing intheir respective paths. The crochet-hook is -now moving over the chaining linger; the cast-off horn has passed over and is engaging the workand preventing it from slipping offthe crochet-hook.-

The process is'continued in Fig. 26, in which figure it will be seen that conditions illustrated in Fig. 9 are immediately to obtain.

Figs. 9 to 26, inclusive, illustrate the steps and stages in the operation of the machine with my attachment applied thereto to produce the following pattern: Beginning with a single regular stitch, comprising two leads of thread of a single loop, the loop being upon the crochet-hook and both leadspassing through the same hole in the .fabric, the' crochet-hook catches the lead of the same loop above the fabric and between said hole and the eye of the needle; then, While the needle is stationary, the crochet-hook draws the lastnamed lead, as a loop, through the other two loops upon itself ;=the lastnamed two loops are forced olf the crochet-hook by means-of the cast-off horn -asa chain link not directly connected with the the fabric at certain revolutionary periods and thereby make a series of chains spaced from the edge ofthe fabric by the chaining finger and not containing leads directly linked to the fabric. Thus by predetermining by any suitable means the periodicity of reciprocation of the needle-bar with respecttto the periodicity`- of cyclic movements of the crochet-hook any combination `of stitched chains and unstitched chains may be v made.

VFigs-2.7, 28, 29, and 39 illustrate a modication 4of my attachment.

In this modification I do not utilize the larger gear 3l of the feed mechanism of the crocheting machine,A but,rlin stead, I remove the pitmanv I1 and eccentric ISaltQgether; and in place of the eccentric I x to the drive shaft I`9 a gear 60, which, as shown in Fig. 27, engages a gear 6I ,iournaled on a ,stub shaft B2 preferably driveiitted into a bracket 63. fixed to the body of the machine by screws at 64 and 65.

The gear (il is retained onthelstub shia/ft-S! by any suitable means, suchas a collari..` That end of the lever- IiiV normally engaged bythe removed pitmanllisyiitted with-a pin 51 on which a sleeve 58 is rotatably mounted and secured. The

vfg;'immediately--succeeding stage.- The needle is l sleeve., is-.receivcd within' a-continuous channel '1.59 formed by a series of-elem'ents forming a cam nearly at the end of its downward movement.A and y structure 10 which is xed to the faceof the gear the crochet-hookis beginning to be retracted. In 1 pf*r-oppositethehody=ofthe machine; asV shown in Fig. 27.

' Als'the gear 6l is 'rotated'in mesh with the'gear "-tthe'lever l5 is caused tofoscillate according to the con'gurationof the'channelf-Swhich, it4

- 'will be presently shown,ma'y be yvaried as desired.

Fig. 28 is thesection-"ZBLe-'Z-S of Fig. 27.1 An-exemplary arrangement of the cam structurel!) is l' shown, which provides for one descent `of the lneedle-'har upon each yfourth Vrevolutionf'othe 'drive shaft I9.

*The cam structure may be varied easily on account of' the lsirriplicitry of its-elements.. `lor example the-gear t I may he provided'vith Aahoss "i `vlll oionly slightly lesswdiameter than the-'gear f itself; landthis bossl,--which;may, if desiredfbe a I- separate element, suchas `afdisk kfitted to the gear 61 concentric'allvby suitable` means, is'shownin Fig. 29 to be provided V'vvitha-immher of'v spaced tappedholes' l'Zarrangedto receive screws 13 by-f i' means ofwhich various elementsl (one of which 'iis shown in rectilinearperspective in-Fig.`30)V may attached tothe hoss'l'l Vfor the purpose ofas- '-semhling variably a cam to control lever l5. 'Fig ""f, =showing oney such element, also Vshows the vlscrew'holes vr'515,"15, therein to'he countersunl: so

Lthat flathead screws maylbe used-'asa convenience l *in the relativelylirnited vvspace available.

The elements 1,4 areoftwo-v kinds: one, such as *that-shown to theloottoni left in Fig.'29 and in -"-?Fig;"30,=having -a channel'therein which is concentricwith the gear El -so'- that iwhen'the sleeve A#t8 istraveling'in such-channel :no oscillatory 'emovement'fwillfb'e translated tothe lever 15; and

- another, such as-thatshownto the -upperright recina-ocationy of the needle bar in associationwith #revolutions of the drive -rshffiit -will:,now :be-:apparifi'ent'to .thoseskiliedintheart.

' `I claim:

1: In a; crocheting- 'machine -of -the class `defseribed, af-fneedle supplied -iwithfthrea av needle eifbar; .a crochethook; az-.supialemental thread holder; a drive shaft; a cam driven by said drive =-;fshaft=at a rate-lessfthan that of said'fshaft-f said cam being shaped to effect reciprecationVV of said needle-:har in response -to-certainf ordinal; revolution-sof said ldrive i shaft and; not :in :respon-se to yother ordinal :revolutions Vthereof g.. anothercam .-fdrivenhy saidj drive 4.shaft andY shaped to operate :fsaid supplerriental ,thread holder :in response yto 'f @every revolution. of said drive ,sha-ft; athird cam drivenbysaid drive-shaft and shaped to. operate said crochet. hookiinresponse, to. every revolution of said drive shaftsandsaidsunplemental thread .-.holder having `an eye with one V.wall thereof .lsiotted so .that after` each reciprocation of said Yneedle bar the needle vthre'ad'is received ila-said eye' through the 'slotted .wall thereof and held in jfthe path ofsaid crochethook until the lnext reprocation of said uneekhe'har.

-.2'.."In:. .a crocheting machine "of Vtheclass-de- "and a drive shaft, means vforfeffecting oscillation --ofsaid leverandL reciprocation-fofsaid needle bar during certain `-predetermined revolutions 'of-said drive shaft Aand @for preventing oscillationlof said lever and Kreciprocation of ysaid y-rneedle #har during 'other revolutions Aoff-said* drive shaftpsaid means comprising a cam-*driven `vby V- said drive shaft, said fcamebeing a diskl'having acirciiitous channel in-one `face thereof, I:an end ofsaidlever VYloeing'rreceived inv-said-ch-annel, and a gear on said disk coaxial therewith and engaging anothergear mounted onf-said fdrive shaft; thefratio ofthe'gears-'being such that avpluralityfof-frevolutionso'f saiddrive-shaft is-requiredfto eifect one revolution-'of said'- cam, and a-threadfholder'with "an eve having' one wall slotted; sothat lafterreach oscillation ofsaidleverL and-reciprocation `ofi'said needle bar vthe :needle thread "isreceivedl inf` said f ever throughthe 'slotted 'Wall `thereoi5and1 l'1eld taut -untilthe next reciprocation ofthe needleifban 3.' The 'means of lclaim Z'Whereinfsaidffcamis a disk made up of a plurality of elementsofrcommon angular extent,'each of: said elementsfbeing secured rte said gear `coaxial with said: dislnveach of said elementsebeing'provided witha channel the ends of which are inregisterfwviththefadjacent 'ends of `the, channels 'of lcontiguous feleiments, and-some of said'elementshaving'channels concentric with said disk and other yofsaidelements 'having channels -shapedto'eifect oscillation of said lever as'thefsame is engaged bi1-.such

others zof 1 said elements.

- 4;*In -a crocheting-machinefofgthe .classf'described, :having a needle vsupplied with thread, a

' needle har, 'a needle-bar lever, asupplemental thread holder, acrochet hook; and adriveshaft,

' meansforf eifectingnreciprocation of. said -needle inresponsel tocertain: ordinal Irevolutionsfot-said needle in responselto certain/ordinal revolutions of said drive shaft and not'invresponsetootherfordinal revolutions thereof, .saidA meansy comprising a latch normally connectingsaidfneedle:bar lever *with said yneedle bar, acam driven bysaid drive shaft, alnk attached: to said latch andengagec'lqby said cam kperiodicallyduring predetermined 'revolutions of said 1 drive shaft thereby ieffectingfnnlocking of vsaid 'latch and-enabling saidneedleibar levery to'move independently with respect .to.-. said needle-:han

5; The meansof claim 4 liWhereirrsaid cam is a gear fdrivenvhy l saidvdrive shaft :having a --number of Langularly :spaced Aand v'renlovable:pins-i. mounted onthe face of saidfgear, and abellcrankione -arm'of which isfperiodica-llyengaged Ybyfeachfof said pins -and the 'other armcfwhich is connected to said linkfso that ,when `a'pin.nmonnted:on#said 'igearf engagesears;-r arm=of` said: bell cranio said flink Y operates to withdraw the iatch -fromssaid 'needle :har cand` prevent sits'A movement with :thatfof-fsaid needle bar lever.

6.. In crocheting machine 'ofxth'erzlass'fdescribed, a needle supplied with' thread; crochet hook', ya thread vholder having 'an eve ith one 'Wall' thereof slotted; a drive V...shaft:f.;and.

`driven by said-'drive'f'shaft :'rst cam'thereof effecting recinrocation'or. .said needle inresponse l to certain ordinal revolutions of said -dtii'e:=shat V'and not: inflresponse-'to :other ordinalerevolutiens Teatina-1reciprocation of said -zfcrochet 'Phonic :a nd. I off-said thread holder in response to. 1each:revolution of.

said drive shaft.

'I'. 'In .a crochetingf machine of theefclassffdef scribed, aneedlezsupplied#-withfthread;eacrochet Lhook; a thread `"holder having aan i :eyeewith one wallf' thereon-slotted; :a 4#drive @shafts `@and ycams MORRIS PHILIP.

14 REFERENCES CITED The following references are oi record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,125,437 Avis Jan. 19, 1915 1,172,670 Carter Feb. 22, 1916 2,007,863 Jenni July 9, 1935 l0 2,333,689 Sigoda Nov. 9, 1943 2,337,119 Lutz Dec. 21, 1943 

